Combined Defence Services Examination Question Papers

Q2. A wheel makes 12 revolutions per min. the angle in radian described by a spoke of the wheel in 1s is (1) 5p/2 (2) 2p/5 (3) 3p/5 (4) 4p/5 combined defence services examination question papers Q3. A ladder 20 m long is placed against a wall, so \that the foot of the ladder is 10m from the wall. The angle of inclination of the ladder to the horizontal will be (1) 30° (2) 45° (3) 60° (4) 75° Q4. If 0° < ? < 90°, then all the trigonometric ratios can be obtained when (1) Only sin? is given (2) Only cos? is given (3) Only tan? is given (4) Any one of the six ratio is given Q5. What is the value of sinA cosA tanA + cosA sinA cotA? (1) sin2 A + cos A (2) sin2 A + tan2 A (3) sin2 A + cot2 A (4) cosec2 A – cot2 A

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